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Copyright>
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Chd|====================================================================
Chd|  SPMD_FVB_AMAX                 source/mpi/anim/spmd_fvb_amax.F
Chd|-- called by -----------
Chd|        DELNUMBC                      source/output/anim/generate/delnumbc.F
Chd|-- calls ---------------
Chd|====================================================================
      SUBROUTINE SPMD_FVB_AMAX(IDCMAX, IDCMAXL)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------------------------
C   M e s s a g e   P a s s i n g
C-----------------------------------------------
#ifdef MPI
#include "mpif.h"
#endif
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "com01_c.inc"
#include      "task_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER IDCMAX, IDCMAXL
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
      INTEGER I, ITAG, MSGOFF, IDCMAXP(NSPMD-1), REQ(NSPMD-1),
     .        STAT(MPI_STATUS_SIZE,NSPMD-1), IERR
C-----------------------------------------------
      DATA MSGOFF/7053/
C-----------------------------------------------
C
      IF (ISPMD==0) THEN
         DO I=1,NSPMD-1
            ITAG=MSGOFF
            CALL MPI_IRECV(IDCMAXP(I), 1, MPI_INTEGER, IT_SPMD(I+1),
     .                     ITAG, MPI_COMM_WORLD, REQ(I), IERR)
         ENDDO
         CALL MPI_WAITALL(NSPMD-1, REQ, STAT, IERR)
C         
         IDCMAX=IDCMAXL
         DO I=1,NSPMD-1
            IDCMAX=MAX(IDCMAX,IDCMAXP(I))
         ENDDO
      ELSE
         ITAG=MSGOFF
         CALL MPI_ISEND(IDCMAXL, 1, MPI_INTEGER, IT_SPMD(1),
     .                  ITAG, MPI_COMM_WORLD, REQ, IERR)
         CALL MPI_WAIT(REQ, STAT, IERR)
      ENDIF
C
#endif
      RETURN
      END
